"Extra" has been way ahead of this breaking story, revealing exclusive pictures of Denise and Richie kissing and snuggling at his Laguna Beach house. Only we have the exclusive details of Hollywood's wildest new hookup.

"Extra" has learned that Richards and Sambora began their relationship in February, just after Heather filed divorce papers.

Sources tell us Richie and Denise are inseparable. The brunette beauty has been seen leaving the guard gate outside of Richie's home, which is five minutes from where she lives. In addition, the couple has showered each other with ultra-lavish love gifts.

People magazine's Jamie Bufalino revealed the romance between the soon-to-be Ex Mrs. Sheen and the soon-to-be Ex Mr. Locklear is the shocker of the year. "Heather and Denise have been so close over the years," Bufalino revealed.

Now Heather and Denise, who once shared a kiss on Charlie and Heather's former show, "Spin City," are not speaking. But they can hardly avoid each other, as their mansions are literally right across the street from each other.

Meanwhile, "Extra" has learned that Denise and Sambora are already making plans for the future. Stay tuned to "Extra" for the real-life celebrity edition of "Trading Spouses."